NR211 (cn 140) Charles and Anne Lindbergh's "Tingmissartoq" (Eskimo for "The one who flies the big bird") on display in the National Air and Space Museum. Between 1929 and 1933 the Lindberghs flew this airplane on 30,000 miles of worldwide route survey flights for Pan Am. This is the only Lockheed Sirius still in existence out of fifteen built.